Start-Up and Aeration Strategies for a Completely Autotrophic Nitrogen Removal Process in an SBR
Joint Authors
Zhang, Xiaoling
Zhang, Fan
Zhao, Yanhong
Li, Zhengqun
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-13
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The start-up and performance of the completely autotrophic nitrogen removal via nitrite (CANON) process were examined in a sequencing batch reactor (SBR) with intermittent aeration.
Initially, partial nitrification was established, and then the DO concentration was lowered further, surplus water in the SBR with high nitrite was replaced with tap water, and continuous aeration mode was turned into intermittent aeration mode, while the removal of total nitrogen was still weak.
However, the total nitrogen (TN) removal efficiency and nitrogen removal loading reached 83.07% and 0.422 kgN/(m3·d), respectively, 14 days after inoculating 0.15 g of CANON biofilm biomass into the SBR.
The aggregates formed in SBR were the mixture of activated sludge and granular sludge; the volume ratio of floc and granular sludge was 7 : 3.
DNA analysis showed that Planctomycetes-like anammox bacteria and Nitrosomonas-like aerobic ammonium oxidization bacteria were dominant bacteria in the reactor.
The influence of aeration strategies on CANON process was investigated using batch tests.
The result showed that the strategy of alternating aeration (1 h) and nonaeration (1 h) was optimum, which can obtain almost the same TN removal efficiency as continuous aeration while reducing the energy consumption, inhibiting the activity of NOB, and enhancing the activity of AAOB.
American Psychological Association (APA)
Zhang, Xiaoling& Zhang, Fan& Zhao, Yanhong& Li, Zhengqun. 2017. Start-Up and Aeration Strategies for a Completely Autotrophic Nitrogen Removal Process in an SBR. BioMed Research International،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1133682
Modern Language Association (MLA)
Zhang, Xiaoling…[et al.]. Start-Up and Aeration Strategies for a Completely Autotrophic Nitrogen Removal Process in an SBR. BioMed Research International No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1133682
American Medical Association (AMA)
Zhang, Xiaoling& Zhang, Fan& Zhao, Yanhong& Li, Zhengqun. Start-Up and Aeration Strategies for a Completely Autotrophic Nitrogen Removal Process in an SBR. BioMed Research International. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1133682
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1133682